Supported by the National Natural Science Foundation of China (Grant No. 11171055), the Natural Science Foundation of Jilin Province (Grant No. 20130101068) and the Fundamental Research Funds for the
In this paper, the property of linear dependence of solutions for higher order linear differential equation f(k)(z)+Ak-2(z)f(k-2)(z) + ··· + A0(z
The existence and multiplicity of positive solutions are studied for a singular Sturm-Liouville boundary value problem with positive Green function,where the no
Nonconvex penalties including the smoothly clipped absolute deviation penalty and the minimax concave penalty enjoy the properties of unbiasedness, continuity a
Let N be a nest on a Banach space X,and AlgN be the associated nest algebra.It is shown that,if there exists a non-trivial element N in N which is complemented